AI plan limits, explained
How many messages a plan buys, when a limit resets, and why a model burns through it faster than another. Every number comes from the lab's own help center or pricing page, with the date we checked it.
How many GPT-6 Astra messages do you get on ChatGPT Plus and Pro?
OpenAI estimates 5-45 GPT-6 Astra messages per five-hour period on ChatGPT Plus, 25-225 on Pro 5x and 100-900 on Pro 20x, in Work and Codex. It calls these estimates, not fixed message limits.
How much Claude Fable 5.1 usage do you get on the Pro and Max plans?
On Max plans and premium Team or Enterprise seats, Fable 5.1 is included and can take up to 50% of your weekly usage limits. On Pro plans and standard seats it runs on pay-as-you-go usage credits.
Getting an error instead of a cap? Error messages, explained.